Not a bieber fan, but anyone who wants to do this to another human being is morally wrong and has some serious problems that should be addressed.
I think it's fair to say that Justin Beiber is not the most popular dude on the planet. Maybe it's because of his girl-like features or perhaps because he is a self-centred, talentless boy. Personally, i think it's a combination of both those reasons plus more. Either way, wishing harm OR wanting to harm another person (regardless of how grateful mankind would be for it) is wrong.